/*
 * Copyright (c) "Neo4j"
 * Neo4j Sweden AB [http://neo4j.com]
 *
 * This file is part of Neo4j.
 *
 * Neo4j is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.neo4j.internal.batchimport.input;

public interface ReadableGroups {
    Group get(int id);

    Group get(String name);

    int size();

    ReadableGroups EMPTY = new ReadableGroups() {
        @Override
        public Group get(int id) {
            throw new IllegalArgumentException("No group by id " + id);
        }

        @Override
        public Group get(String name) {
            throw new IllegalArgumentException("No group by name '" + name + "'");
        }

        @Override
        public int size() {
            return 0;
        }
    };
}
